Finding the Fourth Proportional to 4,947.76, 7,422.72 and 1,660.77

Step by Step Solution

1. Step 1: Write the proportion equation
   4,947.76 : 7,422.72 = 1,660.77 : x
2. Step 2: Convert to fraction form
   4,947.76/7,422.72 = 1,660.77/x
3. Step 3: Cross multiply
   4,947.76x = 7,422.72 × 1,660.77
4. Step 4: Simplify right side
   4,947.76x = 12,327,430.69
5. Step 5: Solve for x
   x = 12,327,430.69/4,947.76
6. Step 6: Final answer
   x = 2,491.52